TitleGarrison

No bird ever flew nonstop from New York to Tokyo, or raced 15 miles high at triple the speed of sound.                                                                                                   
  But birds do something else.
  They do not conquer the air; they romance it.
.”

  Peter Garrison

HoursAndCounting

Jur's RV7 Aircraft Factory
2917 hours
and counting
Some decisions in life are bare of any obvious logic

 

Now that the roll bar is finally in the level position after installing the shims, I can put in place the WD-643-SS roll bar brace.

The delivered brace is too long and needs to be cut to length. This length varies slightly with the positioning of the roll bar so it makes sense that you have to do this cutting by yourself.
I used a small screwdriver to open the gap between the F7108*B angle and F7108-A rib to insert the roll bar brace tab in between for an initial fit.

I marked a line for the minimal edge distance for the 2 AN3 bolts that will secure the roll bar brace to the F7108-B angle.

 

In the end, I also installed the top skin to make sure that the front rests nicely on the skin. Then started cutting the roll bar brace and ended up with a good fit. It's a bit tricky so be conservative at the first cut and refine as you make additional test fits.

Then clamped everything back in place, aligned the front nicely with the top skin ensuring edge distance for the AN3 bolts on the inside is still goed. Marked the hole location for the connection point at the top for the roll bar brace to roll bar.

Drilled a pilot hole. Needed to use an long drill bit to get good access. I drilled a small pilot hole on each side and then used the long drill bit to drill through both and enlarge to #30.

Then rechecked the bottom allignment for the roll brace tab and drilled the 2 #12 holes for the AN3 bolts

This came out very well and the edge distance is more than sufficient. Then I marked the cut off line for the excess material on the tab.In the picture below I'm in the process of making a rough cut.

Finally I enlarged the hole to 1/4" for the AN4 bolt

Bottom view with tab trimmed.

Some touch up primer pain now where I scratched away the previous primer coat and we'll be good to move on to the next step which is fitting the canopy to the canopy frame and drilling it.
I have to wait for that because it's winter time now and there's no way I can get up to 25°C in there. This will be the first task when spring comes.

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Caution !

Some advice on reading my log for fellow builders !

In some articles, I made corrections at later date on the original article to rectify my own stupidities or faults. Read through the entire article if you intend to use my findings/experiences on your own project !

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It’s possible (not likely) that I’m not as smart as I think I am. (Occasionally, I have moments when I know this to be true. Fortunately, the feeling passes quickly.) Although I have tried to make this information as accurate as I can, it is not only possible, but also quite likely, that erroneous and misguided information lurks within these pages. I cannot and do not warrant these pages to be error free and correct. Furthermore, I accept no liability for the use of this (mis)information. And, as many would say, your mileage may vary. If, after reading this, you are intent on proceeding, please be aware that the contents of this site are protected by copyright (copyright © 2011 and 2012). Nonetheless, you may copy this material subject to these two conditions: (1) any information used is for non-commercial purposes, and (2) the source of the material is properly credited. Of course, you may link to any page herein. At some articles, snippets of the plans from Vans are visible. These are for educational and illustrations purposes only and should never be used as plans for part construction or assembly as plans may have changed since the picture was taken and more important they are protected by Copyright by the Vans Aircraft Mothership company.

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